摘要
针对传统泥膜护壁工法存在的不足,文章阐述了盾构辅助施工新材料——"衡盾泥"的工程特性和研发历程,重点分析了"衡盾泥"用于盾构带压开舱泥膜护壁的工法及工艺,并对富水砂层、裂隙发育岩层、卵石地层、上软下硬地层等异常困难地质条件下"衡盾泥"泥膜护壁工法的应用实例进行了剖析。实践表明,"衡盾泥"泥膜护壁简化了传统泥膜制作程序,其气密性和隔水性强,保压效果好,耐久稳定,能保证开舱作业的安全并提升工作效率。该工法对类似地层和工况下保证盾构带压开舱安全并提高效率具有重要指导作用和借鉴意义。
Aiming at the deficiencies exist in the traditional working face supporting method with filter cake, thispaper introduced a new material for the auxiliary construction of shield, i.e. the Paste HDN and its engineering char-acteristics, proposed a new working face supporting method with this material during hyperbaric intervention, andanalyzed relevant cases under the complex conditions like water-rich sand stratum, fractured rock stratum, cobblestratum, soft upper and hard lower mixed stratum, etc. The results show that this new method simplifies the prepara-tion procedure of filter cake, produces a filter cake with sound durability and sealing, ensuring the intervention safe-ty in shield chamber and improving the construction efficiency.
出处
《现代隧道技术》
EI
CSCD
北大核心
2016年第3期1-7,共7页
Modern Tunnelling Technology
关键词
盾构
衡盾泥
泥膜护壁
带压开舱
Shield
Paste HDN
Working face supporting with filter cake
Intervention in shield chamber
